7-38
EQUIPMENT
-
Heater and Air Conditioning
A/C COMPRESSOR CONTROL
If any of the switches and sensors is caused to
be OFF, the compressor clutch relay and compres-
sor magnet clutch are forced to the OFF state.
Blower switch
Manually set to ON and OFF
I-W
switch
Manually set to ON and OFF
:
Dual pressure switch
Low pressure switch
OFF
at 200
kPa
(29 psi) or lower;
‘2=
e
ON at 220
kPa
(32 psi) or higher
E
0
High pressure switch
OFF at 3,140
kPa
(456 psi) or lower;
b
ON
at 2,550
kPa
(370 psi) or higher
ii
z
Refrigerant temperature switch
<Turbo>
ON at approx. 110°C (230°F) or lower;
-E
OFF at approx.
165°C
(329°F) or higher
CrJ
6
Air inlet sensor Measure the evaporator inlet air and surface temper-
.=
2
atures and input the measured data to the auto
com-
Fin
therm0
sensor
pressor-ECM. (Refer to the auto compressor-ECM
control characteristic diagram on
P.7-36.)
Revolution pick-up
sensor
<Non-turbo>
OFF when compressor slipping rate(s) is 70% or
more
<Turbo>
Ignition switch (IG2)
Fusible link
Auto
compressor-
ECM
Air
therm0
Fin
therm0
sensor
sensor
____--
-------.
Fuse
1
A/C
, compressor
FF
clutch relay
Compressor
20X0237
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